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(No Model.)

G. W; THOMAS.

ELEVATOR ATTACHMENT.

No. 308,010. Patented Nov. 11,1084.

FIE I- 3 0 7IIIIIII I$NNM STATES UNi'rE FFICE.

ATENT ELEVATO R ATTACH M ENT.

SIECIPIGATION forming part of Letters Patent No. 308,010, dated November11, 1884.

Application filed April 14, 1884. (No model.)

To aZZ whom it may concern.-

Be it known that I, GEORGE W. THOMAS, of the city of Baltimore and Stateof Maryland, have invented certain Improvements in Elevator Attachments,of which the following is a specification.

This invention relates to certain improvements in a device to be appliedto one of the upright posts of an elevator, or to a wall adjoining theelevator, to hold down the checkeord, and thereby release the brakemechanism and admit of the free movement of the elevator-platform), aswill hereinafter fully appear.

In the accompanying drawings, forming a part hereof, Figure I is anexterior side view of the invention applied to one of the upright postsof an elevator. Fig. II is a front view of Fig. I. Fig. III is asectional view of Fig. I. Fig. IV is also a sectional view of theinvention by illustrating a modification in the construction thereof.

A is one of the upright posts of the elevator, and B a frame bolted tothe post A at a point above the upper floor of the building. The frame Bhas a fixed jaw, a, with a hollowed inner surface where in contact withthe cord, and a movable jaw, C, also having a hollowed surfacewhich isconnected to the frame B by means of a spring, D, as shown. The hollowedfaces of the jaws a and 0 form a channel, I), (shown in Figs. III andIV,) through which passes the check-cord D, which cord upon being pulleddown and held releases the frictionclutch or brake mechanism of theelevator,'and allows the platform to be raised or lowered.

E is a ball on the check-cord D, which as the said cord is pulled forcesback the jaw and passes beneath it, thus preventing the .upward movementof the cord.

F is a releasing-cord having a weight, 0, at its lower end, whichextends to near the lower floor of the building. The upper end of thecord F passes over a sheave, d, and is attached to a lug, f, on the backof the movable jaw G.

Supposing the elevator-platform is to be raised or lowered, thecheck-cord D is pulled down until the ball E catches underneath the jawsa and 0, when the clutch mechanism of the elevator is renderedinoperative. posing again that the platform is ascending or descending,and it is required to be stopped at any one of the floors, thereleasing-cord F is pulled, which draws back the jaw C and allows theball E to pass it and the check-cord to assume its original position.

In Fig. IV a weighted lever is substituted for the spring D.

I claim as my invention In combination with the stationary upright postA of the elevator, the frame B, having the fixed jaw a and the yieldingjaw O, the check-cord D, having the ball E and the releasing-cord F, theupper end of which passes over a sheave and is attached to the saidyielding jaw, substantially as specified.

GEORGE W. THOMAS.

W'itnesses:

CHAS. B. CASSADY, DANL. FISHER.

Sup-

